2 * Linux ARCnet driver - COM20020 PCMCIA support
4 * Written 1994-1999 by Avery Pennarun,
5 * based on an ISA version by David Woodhouse.
6 * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4)
7 * which was derived from pcnet_cs.c by David Hinds.
8 * Some additional portions derived from skeleton.c by Donald Becker.
10 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
11 * for sponsoring the further development of this driver.
13 * **********************
15 * The original copyright of skeleton.c was as follows:
17 * skeleton.c Written 1993 by Donald Becker.
18 * Copyright 1993 United States Government as represented by the
19 * Director, National Security Agency. This software may only be used
20 * and distributed according to the terms of the GNU General Public License as
21 * modified by SRC, incorporated herein by reference.
23 * **********************
25 * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000
26 * - reorganize kmallocs in com20020_attach, checking all for failure
27 * and releasing the previous allocations if one fails
28 * **********************
30 * For more details, see drivers/net/arcnet.c
32 * **********************
34 #include <linux/kernel.h>
35 #include <linux/init.h>
36 #include <linux/ptrace.h>
37 #include <linux/slab.h>
38 #include <linux/string.h>
39 #include <linux/timer.h>
40 #include <linux/delay.h>
41 #include <linux/module.h>
42 #include <linux/netdevice.h>
43 #include <linux/arcdevice.h>
44 #include <linux/com20020.h>
46 #include <pcmcia/cistpl.h>
47 #include <pcmcia/ds.h>
50 #include <asm/system.h>
52 #define VERSION "arcnet: COM20020 PCMCIA support loaded.\n"
56 static void regdump(struct net_device *dev)
58 int ioaddr = dev->base_addr;
61 printk("com20020 register dump:\n");
62 for (count = ioaddr; count < ioaddr + 16; count++)
65 printk("\n%04X: ", count);
66 printk("%02X ", inb(count));
70 printk("buffer0 dump:\n");
71 /* set up the address register */
73 outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
74 outb(count & 0xff, _ADDR_LO);
76 for (count = 0; count < 256+32; count++)
79 printk("\n%04X: ", count);
82 printk("%02X ", inb(_MEMDATA));
89 static inline void regdump(struct net_device *dev) { }
94 /*====================================================================*/
96 /* Parameters that can be set with 'insmod' */
99 static int timeout = 3;
100 static int backplane;
104 module_param(node, int, 0);
105 module_param(timeout, int, 0);
106 module_param(backplane, int, 0);
107 module_param(clockp, int, 0);
108 module_param(clockm, int, 0);
110 MODULE_LICENSE("GPL");
112 /*====================================================================*/
114 static int com20020_config(struct pcmcia_device *link);
115 static void com20020_release(struct pcmcia_device *link);
117 static void com20020_detach(struct pcmcia_device *p_dev);
119 /*====================================================================*/
121 typedef struct com20020_dev_t {
122 struct net_device *dev;
125 /*======================================================================
127 com20020_attach() creates an "instance" of the driver, allocating
128 local data structures for one device. The device is registered
131 ======================================================================*/
133 static int com20020_probe(struct pcmcia_device *p_dev)
135 com20020_dev_t *info;
136 struct net_device *dev;
137 struct arcnet_local *lp;
139 dev_dbg(&p_dev->dev, "com20020_attach()\n");
141 /* Create new network device */
142 info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
144 goto fail_alloc_info;
146 dev = alloc_arcdev("");
150 lp = netdev_priv(dev);
151 lp->timeout = timeout;
152 lp->backplane = backplane;
154 lp->clockm = clockm & 3;
155 lp->hw.owner = THIS_MODULE;
157 /* fill in our module parameters as defaults */
158 dev->dev_addr[0] = node;
160 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
161 p_dev->resource[0]->end = 16;
162 p_dev->config_flags |= CONF_ENABLE_IRQ;
167 return com20020_config(p_dev);
173 } /* com20020_attach */
175 /*======================================================================
177 This deletes a driver "instance". The device is de-registered
178 with Card Services. If it has been released, all local data
179 structures are freed. Otherwise, the structures will be freed
180 when the device is released.
182 ======================================================================*/
184 static void com20020_detach(struct pcmcia_device *link)
186 struct com20020_dev_t *info = link->priv;
187 struct net_device *dev = info->dev;
189 dev_dbg(&link->dev, "detach...\n");
191 dev_dbg(&link->dev, "com20020_detach\n");
193 dev_dbg(&link->dev, "unregister...\n");
195 unregister_netdev(dev);
198 * this is necessary because we register our IRQ separately
199 * from card services.
202 free_irq(dev->irq, dev);
204 com20020_release(link);
206 /* Unlink device structure, free bits */
207 dev_dbg(&link->dev, "unlinking...\n");
213 dev_dbg(&link->dev, "kfree...\n");
216 dev_dbg(&link->dev, "kfree2...\n");
220 } /* com20020_detach */
222 /*======================================================================
224 com20020_config() is scheduled to run after a CARD_INSERTION event
225 is received, to configure the PCMCIA socket, and to make the
226 device available to the system.
228 ======================================================================*/
230 static int com20020_config(struct pcmcia_device *link)
232 struct arcnet_local *lp;
233 com20020_dev_t *info;
234 struct net_device *dev;
241 dev_dbg(&link->dev, "config...\n");
243 dev_dbg(&link->dev, "com20020_config\n");
245 dev_dbg(&link->dev, "baseport1 is %Xh\n",
246 (unsigned int) link->resource[0]->start);
251 if (!link->resource[0]->start)
253 for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10)
255 link->resource[0]->start = ioaddr;
256 i = pcmcia_request_io(link);
262 i = pcmcia_request_io(link);
266 dev_dbg(&link->dev, "requestIO failed totally!\n");
270 ioaddr = dev->base_addr = link->resource[0]->start;
271 dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr);
273 dev_dbg(&link->dev, "request IRQ %d\n",
277 dev_dbg(&link->dev, "requestIRQ failed totally!\n");
281 dev->irq = link->irq;
283 ret = pcmcia_enable_device(link);
287 if (com20020_check(dev))
293 lp = netdev_priv(dev);
294 lp->card_name = "PCMCIA COM20020";
295 lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */
297 SET_NETDEV_DEV(dev, &link->dev);
299 i = com20020_found(dev, 0); /* calls register_netdev */
302 dev_printk(KERN_NOTICE, &link->dev,
303 "com20020_cs: com20020_found() failed\n");
307 dev_dbg(&link->dev,KERN_INFO "%s: port %#3lx, irq %d\n",
308 dev->name, dev->base_addr, dev->irq);
312 dev_dbg(&link->dev, "com20020_config failed...\n");
313 com20020_release(link);
315 } /* com20020_config */
317 /*======================================================================
319 After a card is removed, com20020_release() will unregister the net
320 device, and release the PCMCIA configuration. If the device is
321 still open, this will be postponed until it is closed.
323 ======================================================================*/
325 static void com20020_release(struct pcmcia_device *link)
327 dev_dbg(&link->dev, "com20020_release\n");
328 pcmcia_disable_device(link);
331 static int com20020_suspend(struct pcmcia_device *link)
333 com20020_dev_t *info = link->priv;
334 struct net_device *dev = info->dev;
337 netif_device_detach(dev);
342 static int com20020_resume(struct pcmcia_device *link)
344 com20020_dev_t *info = link->priv;
345 struct net_device *dev = info->dev;
348 int ioaddr = dev->base_addr;
349 struct arcnet_local *lp = netdev_priv(dev);
356 static struct pcmcia_device_id com20020_ids[] = {
357 PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.",
358 "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
359 PCMCIA_DEVICE_PROD_ID12("SoHard AG",
360 "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7),
363 MODULE_DEVICE_TABLE(pcmcia, com20020_ids);
365 static struct pcmcia_driver com20020_cs_driver = {
366 .owner = THIS_MODULE,
368 .name = "com20020_cs",
370 .probe = com20020_probe,
371 .remove = com20020_detach,
372 .id_table = com20020_ids,
373 .suspend = com20020_suspend,
374 .resume = com20020_resume,
377 static int __init init_com20020_cs(void)
379 return pcmcia_register_driver(&com20020_cs_driver);
382 static void __exit exit_com20020_cs(void)
384 pcmcia_unregister_driver(&com20020_cs_driver);
387 module_init(init_com20020_cs);
388 module_exit(exit_com20020_cs);